Portable filing machine



l8 I ,9 INVENTOR.

SAMUEL THOMAS ROMEO. BMW,

y 8, 1952 s. T. ROMEO 2,602,216

PORTABLE FILING MACHINE Filed Dec. 7, 1948 2 SHEETS-SHEET l l0 F/Gil a FIG. 2. 22

FIG. 4.

y 1952 s. T. ROMEO 2,602,216

2 SHEETS-SHEET 2 INVENTOR. SAMUEL THOMAS ROMEO.

M Arron/v5).

Patented July 8, 1952 tions of the previous art.

Another object, of this invention is to provide a new and improved filing machine for use on automobile bodies that will permitmanual use and do filing work expeditiously-and effectively.

A further object of; the herein described invention is to provide a new and improved filing machine that will be convenientlto use, economical to produce and artistic to 'lookat; l n "additional object' of thepinvention is to provide a new and improved filingdevice that will doi'tswork-in a conventional manner ratlferthan employ 1 "usual -mechanicalmovements because of'theapplication'of power to it;" 1

Other objects will become apparent as the invention is more fully set forth.

While various machines have been employed for filing and sanding purposes, they usually employ considerable mechanism, springs and mechanical movements, all of which involve extra manufacturing and maintenance costs, as well as add the care and. effort required in their operation. In this invention the device is made as close to the conventional form of file and its operation, as seems feasible. The construction is kept to simple lines so that the worker will not require special training or skill in its use.

For a better understanding of the invention, its objects and the principles thereof reference is made to the following drawings. These drawings in conjunction with the description herewith given, outline a particular form of the invention by way of example, while the claims emphasize the scope thereof.

Referring to the drawings:

Figure 1 is a side elevation of a power file unit embodying this invention;

Figure 2 is a front end view;

Figure 3 is a sectional view taken on line 3-3 of Figure 2;

Figure 4 is a section on line 44 of Figure 1;

Figure 5 is a sectional view taken on line 5--5 of Figure 3; and.

Figure 6 is a sectional elevation of Figure 1 taken on line 6+6 of Figure 1; and

Figure 7 is a side elevation similar to Figure 1 but with the file bent in concave form shown in full lines and with the file bent in convex form shown in dotted lines.

"-PoR'rABtE riLIN MAoHiNE V S amuel- Thomas Romeo, fialtimorerlti d Application December 7, 1948, Serial No. 63,948 a A 1am. (Cl. za 76) "Similar reference numerals indicate the same parts throughout the drawings;

In the particular structure indicated in the drawings, a mechanically operatedfile is shown and consists of a housing [0 'havinga rear handle I l formanually pushing it, and a front knob l2 fofrits. guidance. The upper-surfacefl't is flat while the contour in general is rectangular with edges rounded. The bottom platelfi'is fflat'with time hold the file. This may be noted in Figure 3.

The bolt l 9 at the rear of the plate [4 is likewise arranged, and is provided with threads at 60 and positioned in and element El which slides in opening l'6. The bolt l9 passes through hole 62 and is rotated by head 63 positioned in counterbored hole 64. Shaft 20 is placed in a slotted opening 26 and extends down into a central portion of a camlike member 27 that it rotates. The member 2'! operates a link 68 which connects with a pin 28 in the file and gives the file a reciprocating movement, as the cam 2! rotates. In reciprocating the file, thebolts l8 and I9 and elements 25 and GI move bodily with it and guidably move in the slots i5 and Hi. The shaft 20 is coupled to a shaft 3!] of a motor 3| by miter gears ll! and II which are securely mounted within a chamber 32 in the housing Ill. This chamber is in the middle of the housing and its partition walls 33 divide it from the chambers 34 and 35 on each side of it. The upper surface l3 and bottom plate [4 are preferably attached to the housing [0 by screws 15.

The bolts i8 and i9 project into the chambers 34 and 35 and access is permitted to them for their adjustment. An electrical switch 35 serves to control the circuit wires 31 to themotor 3|. This switch is preferably placed on the upper surface plate ll) of the housing'under the handle H where it may be conveniently reached.

While the file shown attached is fiat, the bolts are so arranged that they can hold and operate a curved file or hand miller 40 by attaching it in the same way and adjusting the bolts to suit its contour.

In the operation of the device, the motor 3| rotates the shaft 20 so that the cam 21 on the latter reciprocates the file through link 68 enaging the file. The bolts [8 and I9 simply hold the ends of the file so it will be kept in a level position and since they are guided in the slots I and I6 keep it operating in a straight line. The unit is pushed by means of the handle H while the file is reciprocating without interfering with its operation and enables it to cover the area to be filed. The knob I2 is used by the operator to hold the unit steady with one hand while the other hand is pushing on the handle I I.

The main feature about this unit is that it overcomes the disagreeable work involved in common filing especially in automobile fender and body work. The hands of the operator are kept away from the file itself, yet the unit is manipulated by his hands. The unit has a form that makes the work convenient to perform and the type of tool used has an attractive phase that makes it easy and agreeable to the user to operate. The adjustability of the file mountings enable the tool to meet all requirements in its type of work. There is no danger of injury such as usually experienced by workers holding the files at the ends as in common practices, because the hands are kept high above the bench or article on which the file is used. At the same time its cost of manufacture is relatively low.

While but one general form of the invention is shown in the drawings and described in the specifications, it is not desired to limit this application for patent to this particular form, as it is appreciated that other forms of construction could be made that would use the same principles and come within the scope of the appended claim.

Having thus described the invention what is claimed is:

In a filing machine, a housing comprising upper and lower plates and detachable side plates and end plates, a U-shaped handle protruding above and secured to the upper plate, a knob on said upper plate in aligmnent with the handle, a pair of spaced-apart vertical partitions in said housing, between the end plates, forming three chambers, an electric motor in the middle chamber having its shaft longitudinally arranged therein, a file element spaced from: the lower plate, a pair of spaced reciprocating elements protruding through slots in the lower plate and secured to said file element, said reciprocating elements extending upwardly within each of the end chambers, means connecting said motor to said reciprocating elements for reciprocating the file element, said means including a vertical shaft. a circular member secured to and rotated by said shaft and a connecting rod between said member and said file element, said circular member and connecting rod being located in the space between the lower plate of the housing and the filing element, and a switch protruding through the upper plate of the housing and lying beneath the handle.

SAMUEL. THOMAS ROMEO.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS 

